COMHAIRLE CONTAE ÁTHA CLIATH THEAS
SOUTH DUBLIN COUNTY COUNCIL
MEETING OF ENVIRONMENT, PUBLIC REALM AND CLIMATE CHANGE SPC
Tuesday, May 01, 2018
HEADED ITEM NO.
HEADED ITEM: M. Maguire
Update on Flood Alleviation (Including CFRAMS) and Surface Water Schemes
REPLY:
The update on the flood alleviation schemes and the surface water schemes is as follows:
Ballycullen Stream Flood Alleviation Scheme
We have now approximately half way through the 12 month defects period, we continue to monitor all reinstatements to ensure thay comply with the specification and that all green areas grow back to the required standard.
River Poddle Flood Alleviation Scheme
Work on a Winter Habitiat Survey is almost complete in Tymon Park and we expect the final report in the coming weeks. This information will feed into the Environmental assessment or the project that will be required during the planning process with An Bord Pleanala.
Following a protracted procurement process due to an appeal by a tenderer, on 28th March, South Dublin County Council appointed Nicholas O'Dwyer Ltd as consultant and Project Supervisor Design Process (PSDP) for the Poddle Flood Alleviation Scheme. Work has commenced by Nicholas O'Dwyer and both South Dublin County Council and Dublin City Council have sent on mapping and survey information to allow Nicholas O'Dwyer to review the possible solutions. Nicholas O'Dwyer are now working to produce a detailed hydraulic model to allow them to produce a design to alleviate the flooding in the catchment, surveys and site investigations will be required to complete this work. The Environmental Assessment will also be progressing, this will be required prior to making a Part X planning application to An Bord Pleaneala and public consultation on the proposal will also happen prior to submission.
As South Dublin will lead this project and will be carrying out work in the Dublin City Area, we will be bringing a Section 85 Agreement to the May Council meeting for the approval of the members.
Camac Flood Alleviation Scheme
The overall scheme for the Camac did not meet the OPW cost benefit criteria to progress work on the river in its entirety. A steering group has been set up to consider works at specific locations on the Camac River, SDCC and the OPW have met on site and walked the Camac. The OPW have drafted a brief for the appointment of Consultants to carry out the design of flood alleviation measures at these specific locations and this is currently being reviewed by SDCC and DCC.
Whitechurch Stream Flood Alleviation Scheme
As part of the Dodder CFRAMS there is a proposed scheme for the Whitechurch Stream. The OPW have confirmed funding for the procurement of a consultant engineer for the scheme. Some work has commenced on this scheme as the OPW Design office will carry out the hydraulic design for this project. Culvert and channel surveys have been procured.
SURFACE WATER MINOR WORKS PROGRAMME:
1 Surface Water Sewer Systems;
|
Location |
Project |
Update on Project |
|
Tay Lane, Rathcoole |
Flood attenuation |
In Planning. |
|
Glenmaroon
|
Localised surface water improvement – to alleviate flooding on Glenmaroon Road. |
Works Complete. |
|
Peamount Road, Main Street, Newcastle. |
Peamount rd. – ditch to be cleared Main street - Localised surface water improvement |
To commence May 2018. In Planning. |
|
Celbridge Road
|
Surface water improvement scheme – collapsed culvert restoration. |
Works complete. |
|
Ballyowen Lane, Lucan. |
Surface water improvement scheme - - to address localised flooding and to provide a discharge pipeline from Public Realm pitch drainage works |
To commence construction in May 2018 |
|
Templeogue Village |
Section 1 – provide surface water discharge line from Main Street at Morgue Pub to Dodder at Riverside Cottages. Section 2 - Main street - Initial assessment and feasibility study of pipeline along the main street. (anticipated funding from IW) |
Section 1 –Survey is complete. It is hoped that construction will start June 2018 Section 2 -Liaison with Irish Water. |
|
Stocking Lane, Rathfarnham. |
Provide improved drainage on road |
Phase 1- Assess condition of current drainage and Planning. Carried over from 2017 |
|
Old Lucan Road near village |
Localised surface water improvement |
Multi annual scheme in planning in conjunction with Roads |
|
Butterfield Park
|
Localised surface water improvement (anticipated co-funding from IW) |
In planning. |
|
Nangor Road/Ninth Lock Road Junction, Clondalkin. |
Localised surface water improvement |
In planning. Carried over from 2017 |
|
The majority of the above schemes are at preliminary stage and are subject to detailed design and full budgetary estimates. In cases where the new surface water pipeline will provide additional capacity in the foul sewer, co-funding is anticipated from IW. |
|
|
2 Flood Alleviation Minor Capital Works – Rivers & Streams;
|
Location |
Project |
Update on Project |
|
Camac River |
Clearing and regrading |
Works underway. |
|
Poddle River |
Clearing and regrading |
In planning |
|
Jobstown stream |
Regrading, dredging and cleaning. Provision of a better aesthetic area to discourage illegal dumping into the stream. |
In planning |
|
River CCTV & Telemetry |
Provide 4 no. outstations on: - Camac screen at Toyota, Jobstown stream screen before N81 culvert and 2 No. on the Poddle river. |
The 2 no. sites on Poddle are complete. |
|
Rathfarnham Castle |
Clean up and regrade inlet and outlet watercourse to lakes |
May 2018 |
|
Rain Gauge Upgrade |
5 sites |
In planning |
|
Owendoher Stream |
Clearing and regrading |
In planning |